Description
Euclidiana is the focused way to drill LSAT logical reasoning — now with a Quant Gym of quantitative reasoning practice. Built by a Psychologist and test prep specialist for serious applicants who want clean, distraction-free practice that actually moves their score.
WHAT'S INSIDE
• 326 original practice questions: LSAT-style logical reasoning across timed forms, plus the new Quant Gym
• Sample the first question of any test — full explanation included — before you subscribe
• Every form unlocks with a single subscription
• Five reasoning categories: Necessary, Sufficient, Biconditional, Mixed, and Causal (correlation-vs-causation and post-hoc fallacies)
• Every answer comes with a step-by-step explanation
• Color-coded stimulus highlighting shows you exactly which words trigger each logical move
• Built-in Venn and causal-chain diagrams visualize each relationship
• Formal logic notation (P → Q, contrapositive, etc.) shown alongside plain English
• Free Logic Reference: a built-in study section covering necessary/sufficient conditions, formal notation, conditional chaining, and common fallacies
• Test Mode: a true timed exam simulation with no mid-question feedback and a full answer review at the end
NEW: QUANT GYM
• 62 quantitative reasoning questions across four new forms: the Quant Sampler plus Quant Gym I–III, ramping Easy → Hard
• Five areas: Arithmetic, Algebra, Geometry, Data Analysis, and Quantitative Comparison
• The same step-by-step explanations as the logic forms — learn the method, not just the answer
WHY EUCLIDIANA
Most prep apps drown you in features. Euclidiana strips it down to the one thing that raises your score: pattern recognition through deliberate, explained practice. No ads. No streaks. No social feed. Just questions, answers, and the reasoning behind them.
DESIGNED FOR REAL STUDY
• Works fully offline once downloaded
• Clean, eye-friendly dark mode
• Resume any form mid-session
• See your accuracy by question type to find your weak spots
SUBSCRIPTION
Euclidiana Pro unlocks every practice form and all explanations. Both plans start with a 7-day free trial: Monthly at $9.99/month or Annual at $59.99/year, auto-renewing. Payment is charged to your Apple Account when the free trial ends, unless you cancel at least 24 hours before it ends. Your subscription auto-renews at the same price unless auto-renew is turned off at least 24 hours before the end of the current period. Cancel anytime in your Apple Account settings — access stays active until the end of the billing period.
Privacy Policy: https://euclidiana.com/privacy
Terms of Use (EULA): https://euclidiana.com/terms
Euclidiana is owned and published by Biolexic Labs.
Questions? Djwinarick@gmail.com
What's new (v1.6.1)
Your subscription now works in both places.
• Optional sign-in. Create an account with just your email to carry Pro between the app and the Euclidiana website. The app still works fully without an account — nothing is locked behind signing in.
• One subscription, both platforms. Subscribe here and the website unlocks; subscribe on the website and the app unlocks. It works in both directions.
• Manage or delete your account from the About tab.
• Corrected the answer key and explanation on several questions.
• Updated Terms of Service to cover cross-platform access.